Auth by name: Add similarity check

{"ops":[{"insert":"Since some players might be trying to join with typo's - it would be nice to check if submitted player name is similar to any names of non-alive guest players, and show additional option to admin - \"This player might be trying to join as XXX but with few typos, and show new button let in as existing player, one of the options might be to show drop-down with all offline players in the session and allow to choose in case if typos rate is incredible\n"}]}